|Week|Date|Opponent|Result|Attendance|
|---|---|---|---|---|
|1|September 15, 1968|at Green Bay Packers|L 30–13|50,861|
|2|September 22, 1968|New York Giants|L 34–25|60,858|
|3|September 29, 1968|Dallas Cowboys|L 45–13|60,858|
|4|October 6, 1968|at Washington Redskins|L 17–14|50,816|
|5|October 13, 1968|at Dallas Cowboys|L 34–14|72,083|
|6|October 20, 1968|Chicago Bears|L 29–16|60,858|
|7|October 27, 1968|at Pittsburgh Steelers|L 6–3|26,908|
|8|November 3, 1968|St. Louis Cardinals|L 45–17|59,208|
|9|November 10, 1968|Washington Redskins|L 16–10|59,133|
|10|November 17, 1968|at New York Giants|L 7–6|62,896|
|11|November 24, 1968|at Cleveland Browns|L 47–13|62,338|
|12|November 28, 1968|at Detroit Lions|W 12–0|47,909|
|13|December 8, 1968|New Orleans Saints|W 29–17|57,128|
|14|December 15, 1968|Minnesota Vikings|L 24–17|54,530|

Question: how many times were the dallas cowboys listed as an opponent?
Answer: 2